Some backlash or looseness in fitting with the throttlehandle (handle's connection to body) yet the screw was tightened well.
The parts which are coming with don't match well with the cables at same brand. The irritating thing was the thrustcable's socket which didn't fit underbetween the backcover (plastic) and aluminium body. There should have been some different part to fix thrustcable nicely and well.
Otherwise (despite these qualitywrong default parts thing) the control box handles job quite ok.